#include <csapp.h>

int main()
{
	pid_t pid;
	
	if((pid=Fork())==0)
	{
		printf("wait for be killed\n");
		Pause();
		printf("control should never reach here!\n");
		exit(0);
	}	
	sleep(2);
	printf("I will kill my son\n");
	Kill(pid,SIGKILL);
	exit(0);
}
